发明名称 |
DIRECTIONAL DUAL FREQUENCY ANTENNA ARRANGEMENT |
摘要 |
<p>Consistent with an example embodiment, using two simple antennas with different frequencies of operation combined into an antenna arrangement a directional radiation pattern is obtained for both frequencies of operation. This is achieved by placing the antennas such that the first antenna acts as a director for the second antenna at the frequency of operation of the second antenna and the second antenna acts as a reflector for the first antenna at the frequency of operation of the first antenna. In another example embodiment, in the case of a monopole antenna the first antenna is shorter than the second antenna and can thus operate as a director while the second antenna is longer than the first antenna and can thus act as a reflector.</p> |
申请公布号 |
EP1527500(A1) |
申请公布日期 |
2005.05.04 |
申请号 |
EP20030766545 |
申请日期 |
2003.07.16 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
DE RUIJTER, HENDRICUS, C. |
分类号 |
H01Q19/28;H01Q1/24;H01Q3/24;H01Q5/10;H01Q9/30;H01Q21/29;(IPC1-7):H01Q21/29 |
主分类号 |
H01Q19/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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